WCBS launched something similar to this - CBS New York Plus - on digital subchannel 2.2 back in 2011, but it lasted less than three years.
New York has no shortage of 24-hour local news - NY1, News 12 and Fios1 depending on your area and TV provider - plus of course the trusty old WCBS and WINS on the radio. The only real change in the landscape that could make this second attempt more viable is the increase in smart TVs and similar.
WNBC-TV also had a digital service on its 4.4 subchannel from 2008-2014 named "WNBC 4.4", which retan newscasts and additional content. The 4.4 subchannel would later be retooled as a lifestyle / news hybrid channel named "New York Nonstop" in 2009 (with regional "NBC Nonstop" channels in Miami, Chicago, Philadelphia, Dallas, and Washington DC. The California-based owned stations KNBC Los Angeles, KNSD San Diego and KNTV San Jose teamed up for a statewide "Nonstop" channel) and moved it to 4.2 (replacing NBC Plus after NBC Weather Plus was closed down after NBC acquired The Weather Channel)before NBC Universal created a digital network dedicated to reruns called
Formerly knows as "asnycBBC"